. = n = A/(B +C), where: A = [S 2 1 /n 1 + S 2 2 /n 2 ] 2 , B = [S 2 1 /n 1 ] 2 / (n 1 -1), C = [S 2 2 /n 2 ] 2 / (n 2 -1)
Otherwise, do not worry about the problem of having an actual a level that is much different than what you have set it to be.
The following decision chart provides a guide in selecting an appropriate test-statistic concerning the means m 's for both, one and two populations.
Click on the image to enlarge it and THEN print it.
A Decision Chart for Testing the Means m 's
This program has become increasingly more appealing to teachers around the state of Colorado. Courses are scheduled during the months of June and July in such a way that the program may be completed in three summers. Students take a concentration in research methods courses, become well-versed in research, evaluation, and statistical methodology, and acquire the skills and knowledge to be able to conduct statistical analyses and evaluations for educational and state agencies. Learn more about the program.
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